∵-15xay与-3x2yb-3是同类项,
∴b-3=1,
∴b=4,
又∵a=2,
∴a+b=6.
(2013·山西省太原市统一检测)—David, the windows of the room are very dirty. ________ I clean them before we move in?
—Of course.
A.Will
B.Would
C.Shall
D.Do
逻辑框架法的应用分解为两个阶段,即()。
A.项目分析
B.招标投标阶段
C.编写建议书
D.实施方案设计
E.项目评估